– by Pete Deemer, Gabrielle Benefield, Craig Larman, and Bas Vodde. An early description of Scrum, written in 2006 by a respected group of CST practitioners. Offers an in-depth introduction to the theory and practice of Scrum.

– compiled by Jeff Sutherland, one of the co-creators of Scrum. A collection of papers relating to the practice of scrum that covers the basics all the way up to advanced topics such as how to scale Scrum.